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Question: When the velocity of an electron increase , its de Broglie wavelength :...

When the velocity of an electron increase , its de Broglie wavelength :

A

Increases

B

Decrease

C

Remains same

D

May increase of decrease

Answer

Decrease

Explanation

Solution

: The de Broglie wavelength is given by

λ=hp=hmv\lambda = \frac{h}{p} = \frac{h}{mv}

So if the velocity of the electron increases, the de Broglie wavelength decreases